JPH0656170B2 - Scaffolding pipe connector - Google Patents

Description

TECHNICAL FIELD The present invention relates to a connector for connecting scaffolding pipes used at a construction site in a horizontal or vertical direction.

(Prior Art) As shown in FIGS. 7 (a) and 7 (b), a conventional scaffold pipe connector has a semi-circular base material E and a downward U-shaped cross section. The material F is made to face each other, both materials are inserted into the belt-like connecting tool G, and when the bolt H screwed into the upper material F from the connecting tool G is screwed in, the upper material F is shown by an imaginary line in FIG. The upper material F is pulled up from the position to the position shown by the solid line
The lower member E and the lower member E are in contact with the inner surface of the scaffolding pipe A covered with the outer periphery thereof as shown in FIGS. 8 (a) and 8 (b) so that the scaffolding pipe A is fixed.

(Problems of Prior Art) Since the scaffolding pipe connector of FIG. 7 fixes the scaffolding pipe A by bringing the upper material F and the lower material E into contact with the inner surface of the scaffolding pipe A, vibration is caused. When the tightening of the bolts H is loosened due to such reasons, the abutting force between the upper material F and the lower material E against the scaffolding pipe A is weakened, and the fixing is loosened, and the scaffolding pipe A is easily removed.

(Object of the Invention) An object of the present invention is to provide a scaffolding pipe connector that can easily and reliably connect two scaffolding pipes in a straight line and has a simple structure.

(Means for Solving the Problems) In the scaffolding pipe connector according to claim 1 of the present invention, as shown in FIG. 1, the engaging portion 20 by the locking hole B or the rivet C is provided at the longitudinal end. The formed scaffolding pipe A or the scaffolding pipe A in which the engaging portion 20 is not formed is inserted into the pipe-shaped connecting base material 1 into which the left and right ends can be inserted, and the scaffolding inserted in the connecting base material 1. The stoppers 12 for positioning the working pipe A are fixed, and the pipe fixing portions 2 for sandwiching and fixing the scaffolding pipe A inserted in the connecting base material 1 are provided at both ends of the connecting base material 1 in the longitudinal direction. The fixing portion 2 is the connecting member 1.
A part of the circumferential wall of the scaffolding 3 in the circumferential direction is used as a support portion 3 for supporting the scaffolding pipe A, and the scaffolding pipe A is provided at one end in the circumferential direction of the supporting portion 3.
The sandwiching piece 4 covering the outside of the connecting base 1 is attached rotatably in the circumferential direction of the connecting base material 1, and the sandwiching piece 4 is attached to the other end of the supporting portion 3 in the week direction.
A fastening bolt 5 for locking the sandwiching piece 4 to the outer periphery of the scaffolding pipe A by being locked to is attached rotatably in the circumferential direction of the connecting base material 1, and both the support portion 3 and the sandwiching piece 4 are attached. Alternatively, either one of them is provided with a locking portion 7 which is locked to the engaging portion 20 of the scaffolding pipe A inserted into the connection base material 1 to prevent the scaffolding pipe A from coming off. It is a feature.

Of the present invention, the scaffolding pipe connector of claim 2 is claim 1.
In the scaffolding pipe connector, as shown in FIG. 1, the locking portion 7 is a locking bolt 8 attached to the sandwiching piece 4, and the locking bolt 8 is the scaffolding pipe. It is designed such that it can be screwed into the locking hole B of A.

Of the present invention, the scaffolding pipe connector of claim 3 is claim 1.
In the scaffolding pipe connector of FIG. 1, as shown in FIG. 1, the locking portion 7 has a locking hole 9 formed in the support portion 3.
And the locking hole 9 is the rivet C of the scaffolding pipe A.
The head D of the above can be fitted and locked.

(Operation) An existing scaffolding pipe A has a locking hole B formed at its longitudinal end as shown in FIG. 6 (a), and a rivet C at its longitudinal end as shown in FIG. 6 (b). Is penetrated and its head D
There are a scaffold that is projected and caulked outside the scaffolding pipe A, and a scaffolding pipe that has neither the locking hole B nor the rivet C (the existing basic shape).

To connect the scaffolding pipe A1 of FIG. 6 (a) using the scaffolding pipe connector of the present invention, open the sandwiching piece 4 as shown in FIG. 1 and then connect the scaffolding group as shown in FIG. The scaffolding pipe A1 is inserted from the left and right ends of the material 1, and then the sandwiching piece 4 is closed to cover the scaffolding pipe 4 with the outer periphery of the scaffolding pipe A1.
As shown in the drawing, the locking bolt 8 provided on the sandwiching piece 4 is screwed into the locking hole B of the scaffolding pipe A, and in this state, the tightening bolt 5 is fitted into the locking portion 10 of the sandwiching piece 4. , Tighten the nut 6 screwed to the tightening bolt 5. As a result, the scaffolding pipe A1 is tightened by the sandwiching piece 4 as shown in FIG. 3 to fix the scaffolding pipe A1, and the two scaffolding pipes A1 are connected in a straight line as shown in FIG. It

In order to connect the scaffolding pipe A2 of FIG. 6 (b) with the pipe connecting tool of the present invention, after opening the sandwiching piece 4 as shown in FIG. 1, the left and right sides of the connecting base material 1 as shown in FIG. The scaffolding pipe A2 for scaffolding is inserted from both ends, and the head D of the rivet C projecting to the outside of the scaffolding pipe A2 as shown in FIG. 6 is attached to the support portion of the pipe connector as shown in FIGS. 1 and 4. 3 is fitted into the locking hole 9 formed therein, and in that state, the sandwiching piece 4 is closed, the tightening bolt 5 is fitted into the locking portion 10 of the sandwiching piece 4, and is screwed into the tightening bolt 5. Tighten the existing nut 6. As a result, the sandwiching piece 4 is pressed against the scaffolding pipe A2 to fix the scaffolding pipe A2, and the two scaffolding pipes A2 are connected in a straight line as shown in FIG.

In order to connect the scaffolding pipe in which neither the locking hole B nor the rivet C is formed by the pipe connecting tool of the present invention, the holding piece 4 is opened as shown in FIG. 1 and then the connecting base as shown in FIG. The scaffolding pipes for scaffolding are inserted from both left and right ends of the material 1, and in that state, the sandwiching piece 4 is closed, the tightening bolt 5 is fitted into the locking portion 10 of the sandwiching piece 4, and is screwed to the tightening bolt 5. Tighten the nut 6. As a result, the sandwiching piece 4 is pressed against the scaffolding pipe to fix the scaffolding pipe, and the two scaffolding pipes A2 are connected in a straight line. At this time, the locking bolt 8 provided in the sandwiching piece 4 and the locking hole 9 formed in the support portion 3 are not used and are left as they are.

(Embodiment) FIGS. 1 to 5 show an embodiment of the scaffolding pipe connector of the present invention.

In FIG. 1, 1 is a connecting base material for linearly connecting two scaffolding pipes A, and 2 is a pipe fixing portion for fixing the scaffolding pipe A inserted in the connecting base material 1. is there.

The connection base material 1 of FIG. 1 is formed in a cylindrical shape into which the scaffolding pipe A can be inserted from both left and right ends. This connection base material 1
For this, an existing round pipe having an inner diameter slightly larger than the outer diameter of the scaffolding pipe A may be used, or a flat plate processed into a round pipe may be used.

The connecting base material 1 may be formed in a square pipe shape so that a square scaffolding pipe can be inserted. An existing rectangular pipe may be used as the rectangular connecting base material 1, or a flat plate processed into a rectangular pipe may be used.

The inside of the substantially central portion in the longitudinal direction of the connecting base material 1 is shown in FIG.
A stopper 12 is attached as shown in the figure.
The stopper 12 is for positioning the scaffolding pipe A so that the tip of the scaffolding pipe A inserted into the connecting base material 1 abuts against the scaffolding pipe A so that the scaffolding pipe A is not further inserted. is there.

The stopper 12 may be an iron ring as shown in FIG. 1 or an iron rivet as shown in FIG. The ring-shaped stopper 12 is welded to the inner surface of the connecting base material 1 as shown in FIG.
Are fixed through the connecting base material 1 as shown in FIG.

The pipe fixing portion 2 of FIG. 1 is formed at both ends in the longitudinal direction of the connecting base material 1, and is composed of a supporting portion 3, a sandwiching piece 4 and a tightening bolt 5. As shown in FIGS. 5 (a) and 5 (b), the support portion 3 is formed by cutting a part (generally upper half) of the peripheral wall of the connecting base material 1 in the circumferential direction, and part of the other (generally lower half).
Is formed in a semi-cylindrical shape. The remaining portion (supporting portion 3) has a substantially semi-cylindrical shape so that the scaffolding pipe A inserted into the connecting base material 1 can be supported.

A sandwiching piece attachment portion 13 that connects the sandwiching piece 4 is formed at one end of the support portion 3 in the circumferential direction, and a bolt connecting portion 14 that connects the tightening bolt 5 is formed at the other end in the circumferential direction. Further, a locking hole 9 is formed in the central portion of the support portion 3 in the circumferential direction as shown in FIG. 1 to form a locking portion 7, and the locking hole 9 is provided in the locking hole 9 as shown in FIG. 6B. The head D (engagement portion 20) of the rivet C driven into A2 can be fitted and locked.

A sandwiching piece 4 covering the outside of the scaffolding pipe A is attached to the sandwiching piece mounting portion 13 of the support portion 3 by a bolt 15a and a nut 15b so as to be rotatable in the circumferential direction of the connecting base material 1. . A nut 16a is attached to the outer side of the sandwiching piece 4 as shown in FIGS. 1 and 2, and a screw hole 16 is formed as shown in FIGS. 3 and 4, and the screw hole 16 is locked in the screw hole 16. The bolt 8 is screwed in to form the locking portion 7. This locking part 7
The (locking bolt 8) can be inserted into the locking hole B (engaging portion 20) formed in the scaffolding pipe A1 as shown in FIG. 6 (a), as shown in FIG.

Further, as shown in FIG. 1 and FIG.
Is formed, and the locking portion 10 is provided with a tightening bolt 5
One end in the circumferential direction is opened so that the can be put in and out.

As shown in FIGS. 1 and 2, a fastening bolt 5 is attached to the bolt connecting portion 14 of the support portion 3 by a bolt 18 and a nut 17 so as to be rotatable in the circumferential direction of the connecting base material 1. The tightening bolt 5 is for engaging with the engaging portion 10 of the sandwiching piece 4 and tightening the sandwiching piece 4 on the outer periphery of the scaffolding pipe A, and the tightening nut 6 is screwed onto the tightening bolt 5. Has been done.

In the structure shown in FIG. 1, a locking bolt 8 is formed on the sandwiching piece 4 as the locking portion 7, and a locking hole 9 is formed in the central portion of the support portion 3 in the circumferential direction. It is also possible to provide only one of the locking hole 9 and the locking hole 9.

(Example of use) In the scaffolding pipe connector of the present invention, the sandwiching piece 4 is opened, the scaffolding pipe A is inserted into the connection base material 1, the sandwiching piece 4 is closed, and the tightening bolt 5 is attached to the sandwiching piece 4. The scaffolding pipe A can be fixed simply by locking the locking part 10 and tightening the M and the nut 6.

Further, by tightening the locking bolt 8 and screwing it into the locking hole B of the scaffolding pipe A, the scaffolding pipe A can be locked and fixed more reliably.

Further, the head D of the rivet C of the scaffolding pipe A is attached to the locking hole 9
The scaffolding pipe A can be more securely locked and fixed even when the scaffolding pipe A is locked.

(Effects of the Invention) The scaffolding pipe connector of the present invention has the following various effects.

(1) Pipe fixing portion 2 for sandwiching and fixing the scaffolding pipe A inserted into the connecting base material 1 at both ends in the longitudinal direction of the connecting base material 1.
Since the scaffolding pipe 4 of the pipe fixing part 2 is opened, the scaffolding pipe A is inserted into the connection base material 1, the scaffolding pipe 4 is then closed, and the tightening bolts 5 are tightened. Since A can be fixed, the work of connecting the scaffolding pipes becomes very easy.

(2) Since the positioning stopper 12 is fixed in the connecting base material 1, when the scaffolding pipe A is inserted into the connecting base material 1 until it hits the stopper 12, the scaffolding pipe A automatically It is set in place.

(3) A part of the peripheral wall of the connecting base material 1 is used as the supporting portion 3 that supports the scaffolding pipe A, and the sandwiching piece 4 is rotatably attached to one end of the supporting portion 3 in the circumferential direction, and the supporting portion 3 is supported. Since the fastening bolt 5 is rotatably attached to the other end in the circumferential direction of the connecting base material 1 to form the pipe fixing portion 2, the structure of the pipe fixing portion 2 becomes very simple.

(4) Since the locking portion 7 (locking bolt 8) is formed on both or one of the support portion 3 and the sandwiching piece 4, the engaging portion 20 of the scaffolding pipe A is not the locking hole B. In this case, the locking portion 7 (locking bolt 8) of the sandwiching piece 4 is fitted into the locking hole B to prevent the scaffolding pipe A from coming off the connecting base material 1, which is safe.

(5) Since the locking portion 7 (locking hole 9) is formed in both or one of the support portion 3 and the sandwiching piece 4, the engaging portion 20 of the scaffolding pipe A is the head portion of the rivet C. In the case of D, the head D is fitted into the locking hole 9 and the scaffolding pipe A1 cannot be pulled out from the connecting base material 1, which is safe.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the pipe connecting device of the present invention, FIG. 2 is a perspective view showing a use state of the connecting device, and FIG. 3 is a vertical sectional view taken along the line aa in FIG. FIG. 4 is a vertical cross-sectional view showing a connected state of pipes in which rivets are driven, FIGS. 5 (a) and 5 (b) are explanatory views showing a process of forming a connecting base material, and FIGS. 6 (a) and 6 (a). b) is a perspective view of a different pipe, FIG. 7 (a) is a front view showing a conventional pipe connector, and FIG. 7 (b).
Is a vertical sectional view taken along line cc of FIG. 8A, and FIG.
The use explanatory drawing of a pipe connection tool of a figure, and the figure (b) are the dd line longitudinal cross-sectional views of the figure (a). 1 is a connecting base material 2 is a pipe fixing portion 3 is a supporting portion 4 is a sandwiching piece 5 is a tightening bolt 6 is a nut 7 is a locking portion 8 is a locking bolt 9 is a locking hole 20 is an engaging portion A is a pipe B Is locking hole C is rivet D is head

Claims (3)

[Claims] 1. A scaffolding pipe A having an engaging portion 20 formed by a locking hole B or a rivet C at its longitudinal end or a scaffolding pipe A having no engaging portion 20 can be inserted from both left and right ends. A stopper 12 for positioning the scaffolding pipe A inserted in the connecting base material 1 is fixed in the pipe-like connecting base material 1, and the connecting base material 1 is provided at both longitudinal ends of the connecting base material 1. A pipe fixing portion 2 for sandwiching and fixing the scaffolding pipe A inserted therein is provided, and each pipe fixing portion 2 supports a portion of the peripheral wall of the connecting base material 1 in the circumferential direction to support the scaffolding pipe A. 3, a holding piece 4 covering the outside of the scaffolding pipe A is attached to one end of the supporting portion 3 in the circumferential direction so as to be rotatable in the circumferential direction of the connecting base material 1, and the other end of the supporting portion 3 in the circumferential direction is A tightening bolt that locks with the sandwiching piece 4 and tightens the sandwiching piece 4 on the outer periphery of the scaffolding pipe A. 5 is attached rotatably in the circumferential direction of the connecting base material 1, and the engagement portion of the scaffolding pipe A inserted into the connecting base material 1 is attached to both or either of the support portion 3 and the sandwiching piece 4. A scaffolding pipe connector, wherein a scaffolding pipe 7 is formed so as to be locked to the joint part 20 to prevent the scaffolding pipe A from coming off. 2. The locking portion 7 is a locking bolt 8 attached to the sandwiching piece 4, and the locking bolt 8 can be screwed into a locking hole B of the scaffolding pipe A. The scaffolding pipe connector according to claim 1. 3. The locking portion 7 is a locking hole 9 formed in the support portion 3, and the locking hole 9 is the scaffolding pipe A.
The pipe connector for scaffolding according to claim 1, wherein the head D of the rivet C can be fitted and locked.